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Envelope Solitons in Acoustically Dispersive Vitreous SilicaAcoustic radiation-induced static strains, displacements, and stresses are manifested as rectified or dc waveforms linked to the energy density of an acoustic wave or vibrational mode via the mode nonlinearity parameter of the material. An analytical model is developed for acoustically dispersive media that predicts the evolution of the energy density of an initial waveform into a series of energy solitons that generates a corresponding series of radiation-induced static strains (envelope solitons). The evolutionary characteristics of the envelope solitons are confirmed experimentally in Suprasil W1 vitreous silica. The value (-11.9 plus or minus 1.43) for the nonlinearity parameter, determined from displacement measurements of the envelope solitons via a capacitive transducer, is in good agreement with the value (-11.6 plus or minus 1.16) obtained independently from acoustic harmonic generation measurements. The agreement provides strong, quantitative evidence for the validity of the model.
Document ID
20120011259
Acquisition Source
Langley Research Center
Document Type
Reprint (Version printed in journal)
Authors
Cantrell, John H.
(NASA Langley Research Center Hampton, VA, United States)
Yost, William T.
(NASA Langley Research Center Hampton, VA, United States)
Date Acquired
August 26, 2013
Publication Date
April 25, 2012
Publication Information
Publication: Journal of Physics-Condensed Matter
Volume: 24
Issue: 21
ISSN: 0953-8984
Subject Category
Solid-State Physics
Report/Patent Number
NF1676L-13093
Funding Number(s)
WBS: WBS 432938.11.01.07.43.13.01
Distribution Limits
Public
Copyright
Other

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